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US Patent: 704,645
Differential Speed Mechanism
Patentee: Herman R. Isler (exact or similar names) - Hamilton, OH USPTO Classifications: 74/356 Tool Categories: metalworking machines : metal lathes Assignees: Charles F. Hilker - Hamilton, OH Manufacturer: Not known to have been produced Witnesses: Charles C. Smith Arthur Letherby Lawence Getz	Patent Dates: Applied: Nov. 04, 1901 Granted: Jul. 15, 1902 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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